Machinist&#39;s angle gauge and support



Jan. 26, 1965 J. w. MARCUS MACHINIST'S ANGLE GAUGE AND SUPPORT 2Sheets-Sheet 1 Filed April 26, 1962 IIISJIJ i-IILI I1 3: :11:

INV EN TOR.

5 m WWW fm 7 i M? N Jan. 26, 1965 J.- W. MARCUS MACHINIST'S ANGLE GAUGEAND SUPPORT Filed April 26, 1962 2 She ets-Sheet 2 F76. 6. m2 M0INVENTOR.

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United States Patent 3,156,853 MACHZ'NESTS ANGLE GAUGE AND SUEPGRT JamesW. Marcus, 1425 Slayton St., Grand Haven, Mich. Filed Apr. 25, 1962,Ser. No. 196,436 1 Claim. (6i. 33-174) This invention relates to amachine sho gauge, and more particularly to a machinists angle gauge andsupport enabling accurate angular machining and/ or inspection of aworkpiece.

The art of accurately positioning a workpiece on an angle with respectto a base surface is ordinarily a complex process requiring a highdegree of skill. For example, when machining a corner of -a rectangularblock, the machinist must shim up one end of a conventional sine barwith a plurality of gauge blocks piled upon one another under the sinebar. The dimensions and number of gauge blocks utilized to shim the sinebar are determined from a handbook which indicates the sine or heightrequired for a particular angle. As can be readily realized, this is aprocess requiring a high degree of skill for a proper determination of ahandbook figure, and then choosing and compiling the plurality of gaugeblocks or the like. Further, after the sine bar is positioned at theproper angle, the workpiece to be machined must be mounted so that itWill not be dislodged when the tool machines it. A machinist ordinarilyhas no way of positively and accurately determining the actual angle onthe workpiece until the maclnning step is doneand a check is made, sincethe sine bar and gauge blocks are held in place by gravity only.

fifth form of the device utilizing aplurality of dilferent elongatedarcuate adjustable, sweep members;

FIG. 9 is a front elevational view of one of'the sweep members utilizedin the apparatus of FIG. 8;

FIG. 10 is a front elevational view of the second sweep member; and IFIG. 11' is a front elevational view of a third sweep member utilizedwith the apparatus in FIG. 8.

Basically, the inventive machinists gauge and support means comprises abase, preferably adapted to be mounted in aligned manner on the bed of amachine, a vertically extended portion including a gauge surface, anelongated gauge sweep member having one end pivotally attached to thegauge surface and the body of the elongated mem- In cases where ahandbook is not available, angles or I gauge block heights must becomputed using trigonometry.- This is time, consuming and thepossibility of error is It is therefore an object of invention -toprovide a machinists gauge; and support'for'positioning a workpiece onan angle :relative toa base surface on the Workpiece, and which does notrequire a sine bar, gauge block shims, a handbook, specialskill and/ orother parapher nalia conventionally required. 7

It is another object of this invention to provide a machinists anglegauge and support that provide rigid support, that is easy to manipulateeven by a relativelyv unsk lled person, and that can be accurately setat an angle which is clearly indicated on the device.

It is another object of this invention to provide a machinists anglecutting gauge that can readily be set to enable positioning of aworkpiece at fractional angles in spite of its simplicity.

It is moreover, relatively inexpensive to can be formed all in oneassembled unit.

It is another object of this invention to provide a combined workpiecegauge and support that may be used to inspect angles on a workpiece, maybe used to set the angle of a machine tool to prevent scrap, and mayalso produce, and

be used for lay-out, milling-drilling, jigboring, and

grinding.

These and several other objects of this invention will be apparent uponstudying the following specification, in conjunction with the drawings,in which:

FIG. 1 is a front'elevational view of one form of the inventive deviceshown mounted on the bed of a machine, such as a milling machine;

FIG. 2 is a front elevational view of a second form of the invention;

FIG. 3 is an end, partially sectional, elevational view of the inventivedevice showing one form of connecting and aligning means between theadjustable portion of the device and the fixed portion of the device;

view of a third form of the inventive device;

her adapted to sweep over an arc of approximately on the gauge surface,a plurality of openings extending over the arc adapted to cooperate withconnecting and aligning means on the end of said elongated memberopposite the pivotally mounted end, and cooperating indicia means on thesweep member and the gauge surface to indicate the angle settingtherebetween. The openings in the gauge surface are preferably in aseries of adjacent rows .cooperable' with a plurality of openings in theend opposite the pivotally mounted end of the elongated sweep member, toprovide the variable angular settings indicated by the cooperatingindicia means. The upper surface= of .the elongated member is accuratelymachined at a particular angle with respectto the centerline extendingbetween the pivotal mount of the e1on-' gated member and the centralindicia means onthe outer end of the member.' The connection andaligning means between the member and the surface preferably includesthreaded connecting means and abutting angular surface aligning meansbetween a bolt or screw (e.g. a cap screw) and the openings.

Referring to the drawings, in the form of the invention illustrated inFl G. 1, the novel gauge it is shown mounted upon the bed or table 12 ofa machine such as a milling machine. The gauge it? includes a base 14(FIG. 3), and an upwardly extending portion id having a guide or gaugesurface 18 on the front face thereof. Preferably, diagonal webstrengthening members 2% extend between the base and upright portion formore rigid support. The

base 14 maybe accurately aligned with the conventionalkeyway 22 of bed12 by utilizing a plurality of inverted bolts 26 and 23 havingconventional rectangular shaped key portions 30 adjacent the bolt head34 and adapted to interfit in the upper portion of the inverted T-shapedkeyway above the lower head. base 14 retain the assembly on the keyway.Obviously, other equivalent alignment means can be used. In some casesno alignment is neededor desired, for example in layout work.

The guide face has mounted thereon an elongated sweep member 44)pivotally connected at 42 so that the opposite end of member 4% may moveor sweep over an are approximately 90 in scope. In the guide face 18,extending over the 90 arcuate range, is a plurality of openings 50preferably arranged in a series of adjacent rows. Each row provides adifferential of 1 or /2 or other desired value. Each opening isaccurately machined both for location and for axial accuracy to achieveexact alignment with the sweep member. The base of of connecting Thenuts 36 above the each opening 53 includes a tapped of the elongatedmember 7 example by phantoi means clearly indicate to. the rnaciliistmay be utilized to align and retain the openi ease-see i.e. threadedhole for holding, and a straigi t or angular positioning hole portionfor ali nment. Angular indicia means 5'2 on the face adjacent the opeTnvs, is provided for a purpose explained hereinafter. This indiciameans may be inlaid for minimum Wear.

In the arcuately moving end of elongated member 4% is a plurality' o-fopenings 55 adapted to successively coincidewith selected ones ofopenings 5%. The connecting and alignment means between the sweepmom's-er and 'guide face includes bolt or screw 6% to align, and retainaligned, specified openings 5% and 56 with each other to achievea'particular angular setting. The openings 56 in the elongated member llmay be arranged in a single row; as illustrated in FIGS. 1, 2 and '7, ormay be in a plurality of rows, e.g. three rows as shown PEG. Obviously,the accuracy of angular settings will be greater with the increasednumber of rows.

Cooperating with indicia means 52 on face 13, is indicia means 720:1 theouter end of elongated r her The two indicia means 72 and 52, when assoreveal the exact angular setting between selected openings 5% and Thisiridicia means 72 may cooperate with indicia means 52to provide avernier atiect for extremely accurate settings. On the other hand, theindicia means may merely comprise a pointer as shown at ie in PEG. 2, ina simpler form of the invention, or numerals, as long as the angle isindicated by the cooperation of the'two apparatus'as, illustratecl inPEG. 2, the upper. surface again is parall lto the line between 42- and2 4 (ie. Whiletlie lowcrzsurtace id'is at an acute of /12 With-respectto the centerline. Thus, by disconnecting mounting stud -32, elongatedmorn er ill may be inverted so that surfacefi is on top, therebyenabling calf degree angles to'be measured, is. /2", 1 /2", 2 /z etc A wrkpiece ill, when placed upon "he upper surface 4% is positioned at ar edetermined by thesctting between the openings 5 56., A suitable clampingrneans, such as a B-cia or any equivalent, is utilized to rigidly securethe piece 11 to the face 18 of the rigid ov tion l When the workpiece isat the pro er setting se in place, the portion of the workpiece is thenalong the gredeteri ined specific angle,

a line 23. F e correlative indicia the uncle so that he knows thisinformation before the machining operation begins, thereby reducingscrap rate.

The'particular connecting and aligning means so which gs in properrelationship,'rnay vary in form. For example, the holding means mayassume the form of a slender bolt or cap screw lilii as illustrated inFiG. 3 with inter-conuccting thread portions 1 Zinto the socket por a ofone 58. The alignment means rna Y in the sir pl st less preto red formbe merely the interfit between the cylindrical body or shank of the boltand the cylin ri-c opening so as inFiG. 3, with a' clearance being leftat l Cm the other hand, the aligning means reierably assumes the form ofaccurately machined abutting trusteconical or tapered surfaces asillustrated in 5. These are accurately machined to effect c cunglocatioris down to l or 2 minutes of a degree. in this form of theinvention, instead of a belt, a stud Eli! including al tied at that anot 1'12 on 2E5 outer "d nte may be As 31 {rusto-con-ical surface 11 onas illustrated in PEG. 6, rs eraie annular su g in to form. stitut.

member mg. the 1 l3, it rnay by pivotal] one of the u; r corners, forEfififl"-l:, haud corner as sh Wn FIG. 7.

In the simplest form of this invention, it may be desirable to provideonly one arcuate series of openini s 58" as illustrated in FIG. 8 in theface of face ill of the upright portion, rather than a series of rows.in this simple form of the invention, only one opening is orovided inthe of elongated member through which connecting means is placed tointerfit with an opening 56'. in order to achieve small angular settingsbetween 0 and 5", 5 it? etc, using this form of the apparatus, a seriesof different sweeo members so, 43', and 4 3", as illustrated in FIGS. 9through ll, is utilized. One surface 41 of member ill is arranged to beparallel with the centerline of the member, Le. at an angle of zerodegrees, While the opposi e surface is preferably arranged at one-halfdegree /2 in 2d", one surface is at an angle of 1, with the onnositesurface be. ing at an angle of 2". In member 43, one surface is at anangle of 3 Wit he opposite surface at an angle of 4.

Therefore, by attaching selected one of these sweep members andinverting thorn as needed, the appropriate angles of 0, /2, 1, 2, 3 and4 may be achieved. Or if the connecting means so is inserted between theopening in the elongated member and the 5 opening 56, angles of 6, 7, 8and 9 may be obtained, and so forth. Obviously, this form of theinvention is not as convenient or versatile as the other forms of theinvention illustrated.

in order for a machinist to utilize the novel apparatus to machine thecorner or an angular po n of a Workpiece ill with respect to its fiatbase sur. mounts the novel device on the table or bed utilizing theconve tional keyways 7-2. accura ely attached by bolts and 2e, elongatedsweep arcuatcly over the fro indicia means on the el rig-sited membercoo,.crat the indicia means on the face to indicate the desired angle.He then scr ws connecting and aligning bolt 6*. through the partic taropening es and into opening 5'0 This retains the elongated member ixedlyat that angle. Then he places workpiece ii. on the upper surface ofelongated member 41%, and cla ips it in place against lace l8 as by aCt-ciamp i=1). He 15 U133 ready to machine the set angle, can do soaccurately and easily after the relatively short set up time.

Vl hile the invention has been exolained with respect to milling acorner of a workpiece, may also be used for inspection of workpieceangles, grinding, jig boring, drill ing, layout work, and in someinstances even to accurately set the angle of a machine tool.

It Will be obvious to those skilled in art, that various modificationsother than those several modificctious disclosed, may be made to theapparatus dep nding upon the circumstances involved, Without departingfrom the principles of the invention as taught herein. Such obviousmodifications are deemed to be part of this invention.

1 claim:

A machinists angle comprising: a 5 port base adapted to be mounted onthe bed of a machine; a rigid, upright, workpiece-supporting portionincluding a guide surface; an elongated member having one end pivotallymounted to said upright portion, and said member adapted to move inapproximately a 90 are over said guide surface; a plurality of spacedaccurately machined internally threaded, circular openings over therange of said are; angular indicia means on said upright portionadjacent said openings; said elongated member having at least oneopening and indicia means at its second end, and having an upperworkpiece supporting surface immediately adjacent said upright portionto support a workpiece in an exact vertical and angular position; saidupper surface being accurately machined with respect to the centerlinebetween its pivotal mount and said end indicia means for accurateworkpiece orientation; connecting and alignment means between saidsecond end and said openings, including a bolt adapted to fit throughsaid end opening with close tolerance and into tightenable engagementinside said surface openings, whereby said upper surface of saidelongated member can be angularly varied to provide a desired angularsetting for positioning said workpiece; and said elongated memberincluding a lower surface at a fractional acute angle with respect tothe centerline between said pivotal mount and said end indicia meanswhereby said member can be inverted to enable gauging of fractionalangles for said workpiece.

References Cited in the file of this patent UNITED STATES PATENTS1,065,994 Williams July 1, 1913 1,308,451 Schachat July 1, 19191,809,058 Miner June 9, 1931 2,342,539 Gor-ton Feb. 22, 1944 2,366,385Comfort Jan. 2, 1945 2,385,396 Baum Sept. 25, 1945 2,555,351 Lowe June5, 1951 2,735,182 Kalberer Feb. 21, 1956 3,040,434 Yarosz June 26, 1962

